How to know if the air conditioner is deficient in fluorine
Fluorine deficiency in air conditioners is one of the common faults in summer, which directly affects the cooling effect. So, how to judge whether the air conditioner is deficient in fluorine? The following are practical methods summarized from the hot topics on the Internet in the past 10 days, combined with structured data to provide you with a detailed analysis.
1. Common symptoms of fluoride deficiency in air conditioners
| Symptoms | Specific performance |
|---|---|
| Reduced cooling effect | The air outlet temperature is higher than 16℃ or there is no obvious cooling sensation |
| Increased operating noise | The compressor starts and stops frequently or continues to run at high frequency |
| Abnormal frost formation | The low-pressure pipe is frosted or the evaporator is partially frozen. |
| Increased energy consumption | Electricity bill has increased significantly but cooling capacity is insufficient |
2. Professional testing methods
| Detection method | Operational points | Judgment criteria |
|---|---|---|
| Pressure gauge testing | Connect high and low voltage interfaces | R22 refrigerant low pressure 0.4-0.6MPa is normal |
| Thermometer measurement | Detect the temperature difference between the inlet and outlet | Temperature difference <8℃ may be fluorine deficiency |
| Current test | Clamp meter measuring operating current | Fluorine supplementation is required if the current is 20% lower than the rated current |
3. Tips for self-examination
1.touch detection method: After running for 30 minutes, normally the thick tube (low-pressure tube) should be cold (about 15-20℃), and the thin tube (high-pressure tube) should be hot (about 50-70℃). If the temperature difference between the two tubes is small, there may be a lack of fluorine.
2.Watch the condensation water: In cooling mode, water should continue to flow out of the indoor unit drain pipe. If the drainage volume is significantly reduced or water comes out intermittently, the refrigerant may be insufficient.
3.Judge by listening to the sound: When there is a lack of fluorine, the compressor exhaust sound will become dull, accompanied by intermittent "buzzing" noises.
4. Maintenance precautions
| Project | Specification requirements |
|---|---|
| Fluoride supplementation cycle | Newly installed air conditioners should not be deficient in fluorine within 3 years, and leaks must be checked first |
| Refrigerant type | R22, R410A, etc. cannot be mixed together |
| safe operation | The power must be turned off and operated by certified personnel |
5. Preventive measures
1. Conduct professional testing before use every year, focusing on old air conditioners that have been used for more than 5 years.
2. Clean the filter regularly (recommended once a month). Keeping the heat exchanger clean can reduce the load.
3. Ensure that the pipe is not flattened during installation, and the welding points must be tested for air tightness.
4. Before shutting down in winter, the heating mode should be operated for 10 minutes to allow the compressor lubricating oil to return.
Warm reminder:According to the maintenance data statistics of the entire network, about 70% of the "fluorine deficiency" repair reports are actually other faults (such as damaged capacitors, poor heat dissipation, etc.). It is recommended to conduct a comprehensive inspection before deciding whether to add fluoride. Formal maintenance should include complete processes such as pressure measurement, leak detection, vacuuming, and quantitative filling. Simply adding fluoride may not fundamentally solve the problem.
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